Extension-table slide



V A. P. SCHLOERB.

EXTENSION TABLE SLIDE. APPLICATION FILED MAR 19 Patehted June 3', 1919.

UNITED STATES PATENT OFFICE.

ALBERT P. SCHLOERB, OF MILWAUKEE, WISCONSIN, ASSIGNOR 0F ONE-THIRD TO AUGUST H. ELAMME'ITER AND ONE-THIRD TO WILLIAM L. PFEFFERKORN, BOTH 0F MILWAUKEE, WISCONSIN.

EXTENSION-TABLE SLIDE.

Specification of Letters Patent.

Patented June 3, 1919.

To all whom it may concern Be it known that I, ALBERT P. SCHLOERB, a citizen of the United States, residing at Milwaukee, county of Milwaukee, and State of Wisconsin, have invented new and useful Improvements in Extension-Table Slides, of which the following is a specification.

My invention relates to improvements in extension table slides.

The object of my invention is to provide a set of smooth running, noiseless and durable slides, which will not be materially affected by expansion and contraction due to changes in atmospheric conditions. The re spective bars are provided with comparatively short interlocking travelersto engage the next bar in the set, and the mutually engaging members are composed in part of metal and in part of wood, provision being made for preventing the metal parts from cutting the guiding surfaces of the wooden parts with which they interact. By employing short interlocking travelers, I avoid binding, such as might result in case any one of the bars should become slightly warped.

In the drawings- Figure 1 is a side view of a set of table slides embodying my invention, one of the slide bars being slightly broken away to expose the inner face of the next.

FigLQis a plan view,-p.ar'tlyiin section,

showing a pair of mutually engagingslides,

the central portions of which are broken away.

Fig. 3 is a cross sectional view, drawn on line m-w of Fig. 2.

Fig. 4 is a sectional view, y-y of Fig. 1.

Like parts are identified by the same reference characters throughout the several drawn on line views.

Each of the bars A or B is provided with a pair of channels C and D respectively, which channels are cut in that face (or those faces of the bar) to which the adjacent bar or bars are opposed. The material between the channels C and D constitutes a tongue E, which, however, does not pro ect beyond the body of the bar. The channels G and D are rectangular in cross section, but at the base of each channel and substantially coincident with the outer wall of the channel, I provide an auxiliary channel or kerf F, which extends diagonally into the material of the bar and constitutes an auxiliary channel to receive an interlocking member carried by an adjacent slide. The channels C and D and the kerfs F extend the entire length of the bar, between the respective end portions hereinafter described, and they preferably extend through those portions of the bar also.

Near one end of each bar a metallic interlocking member is socketed in the bar and projects from the grooved face thereof 7 position to engage an adjacent bar. This metallic interlocking member comprises a plateor strip of suitable material, having a flat central portion G and two side legs H, projecting at right angles thereto with the extremities I flared or. angularly bent outwardly from the legs H. The socket in the bar, which receives this member, may be formed by cutting out a portion of the rib E. A wooden filler block J is mounted between the legs H of the metal interlocking member and is provided with a .groove K in the portion thereof which extends beyond the grooved face of the bar A (or B) to which it is applied. This groove K is adapts ed to receive the tongue E of an adjacent bar and the portions Jf of the block J on each side of the groove in a' are adapted to enter the channels D of an adjacent bar. The legs H? and the portions J. of the: b-loick.:-J,. substantially fill such channels and the legs H constitute a metallic sheath for the upper and lower margins of the member J. The flaring portions I of the metal interlocking member enter the diagonal auxiliary grooves F of the adjacent slide and thereby lock the two slides together in what may be called a dove-tail joint.

With the above described construction, the blocks J and the metal members or facings therefor, constitute a traveler adapted to run upon the rib E of the adjacent slide, which rib serves as a track for the traveler. The rib E will normally prevent the interlocking extremities I from bearing upon the walls of the grooves F. But in case of a tendency of the slides to separate, the walls of the grooves F will of course prevent any material separating movement.

The respective slide bars are preferably 105 which run smoothly upon the adjacent bar. The traveler blocks are secured to the bars by screws or nails M, which also hold the metal interlocking members in position.

I claim 1. An extension table slide having a pair of grooves in one side thereof, and a rib separating said grooves, said grooves being rectangular in cross section and having oblique extensions at their outer lower corners, comprising auxiliary grooves, a second slide having projections slidably bearing against said rib, and oblique interlocking rib flanges on said projections disposed in said auxiliary grooves.

2. An extension table slide provided near one end with a pair of outwardly projecting tongues, in combination with a metallic interlocking member, having legs extending along the outer sides of the tongues in rein forcing relation thereto, and also having angularly extending extremities projecting beyond the tongues, and a second slide having grooves to receive said tongues and legs.

3. A plurality of extension table slides each provided near one end with a pair of outwardly projecting tongues, in combination with a metallic interlocking member, having legs extending along the outer sides of the tongues in reinforcing relation there to, and also having angularly extending extremities projecting beyond the tongues, said tongues and legs being adapted to enter a set of grooves in an adjacent slide with the extremities in interlocking relation to angular extensions of such grooves, each of said slides having a set of grooves extending longitudinally thereof from said tongues in interlocking relation toward the opposite end of the slide, and also having angular channels cut in the walls of such grooves, the grooves and channels being adapted to respectively receive the tongues and interlocking members carried by an adjacent slide, substantially as described.

4. The combination with an extension table slide, of a strip of metal socketed in one end thereof and provided with substantially parallel outwardly projecting legs having angularly flaring extremities, and a nonmetallic traveler block extending between said legs and provided with bearing tongues projecting outwardly substantially to the ends of the parallel portions of said legs.

5. The combination of a set of extension table slides provided with longitudinally extending parallel grooves in their opposing side faces, said slides having auxiliary channels extending inwardly in the body of each slide from one wall of each groove, a metallic interlocking member socketed in one end ofeach slide and projecting into the grooves of the other slide, each interlocking member having angular lips adapted to loosely enter said auxiliary channels in the other slide, traveling blocks seated on the metallic interlocking members and having bearing tongues adapted to enter the grooves of the adjacent slide, and spacing projections secured to the respective slides and each having a rounded surface adapted to bear upon the adjacent slide, substantially as described.

In testimony whereof I aflix my signature in the presence of two witnesses.

ALBERT P. SGHLO'ERB.

WVitnesses LEVERETT C. l/VHEELER, IRMA D. BREMER.

Copies of this patent maybe obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G. 

